[root@localhost ~]# timedatectl 
               Local time: Tue 2020-03-31 16:35:23 CST
           Universal time: Tue 2020-03-31 08:35:23 UTC
                 RTC time: Tue 2020-03-31 08:35:23
                Time zone: Asia/Shanghai (CST, +0800)
System clock synchronized: yes
              NTP service: active
          RTC in

[root@localhost ~]# timedatectl list-timezones

[root@localhost ~]# timedatectl set-timezone Asia/Shanghai

tzselect

TZ='Asia/Shanghai'; export